Which behavior is the most unacceptable in the public **** place?

Public **** occasion is we all together public **** place, now a lot of people's quality are not very high, some people like in the public **** occasions casually spit, smoking, and so on, these are not very civilized performance, now are fast-developing era, no longer the kind of thing that do anything casually before the time, I think that people should now improve their own in all aspects of the quality of public **** occasions at least do not carry out smoking ah, casually spit ah, talk spit ah, and so on. Public **** occasion at least do not carry out smoking ah, spitting ah, talking spit ah.